Ridgway — Formicariidse, Furnariidse and Dendrocolaptidse. 73 



Synallaxis albescens hypoleuca jjub.sp. nov. 



Type from Nata, Code, Panama. No. 150,814 U. S. Nat. Mus. March 

 31, 1889. Heydeand Lux. 



Similar to S. a. latitabunda Bangs but under parts (including chest) 

 nearly pure white (only the upper lateral portion of chest very faintly 

 tinged with pale brownish gray), passing into pale buffy brown or light 

 wood brown on under tail-coverts ; general color of upper parts lighter 

 and more huffy brown. 



Dendrocolaptes validus costaricensis subsp. nov. 



Type from Laguaria, Santa Maria de Dota, Costa Rica. No. 210,393 

 U. S. Nat. Mus. Adult male. June 4, 1908. Francisco Basulto. 



Similar to D. v. validus.^ (from State of Santa Marta, Colombia)* 

 but chest less distinctly streaked or with streaks less regular (broken along 

 edges by black dots or bars) and under parts much more extensively 

 barred. 



Xiphorhynchus flavigaster yucatanensis subsp. nov. 



Type from Temax, Yucatan. No. 10(5,292 U. S. Nat. Mus. Adult male. 

 December, 1884. Geo. F. Gaumer. 



Very similar in coloration to X. f. mentalis, of western Mexico, but 

 throat always immaculate pale l)uff ; much paler and grayer than A'. /. 

 flavigaster. 



Xiphorhynchus punctigula insolitus subsp. nov. 



Type from Cascajal, Code, Panama. No. 150,92711. S. Nat. Mus. Adult 

 female? February 13, 1889. Ileyde and Lux. 



Similar to A', p. punctigula but color of pileum and back much darker, 

 tlie latter browner (nearly chestnut-brown), and general color of under 

 parts much browner ( bro^^niish olive instead of greenish olive). 



Xiphorhynchus lacrymosus rostratus subsp. nov. 



Type from Rio Dagua, northwestern Colombia. No. 24,257 Field 

 Museum of Natural History. Adult male. 



Similar in coloration to A". I. lachrymosus but bill much stouter, rela- 

 tively much deeper, with culmen strongly convex or arched, instead of 

 straight for most of its length. Length (skin), 215 mm. ; wing, 121; tail, 

 91 ; culmen, from base, 38; depth of l)ill at nostrils, about 10; tarsus, 24; 

 middle toe, 20. 



Picolaptes affinis neglectus subsp. nov. 



Type from Coliblanco, Costa Rica. No. 199,582 U. S. Nat. Mus. Adult 

 male. INIay 6, 1905. R. Ridgway. 



Similar to P. a. affiiiis but stripes on under parts broader, more distinct 

 on posterior portions ; chin and throat more deeply buff, always more so 

 than stripes on under parts of body. 



* The Santa Marto bird probably does not, however, represent true D. validus, the 

 type locality of which is eastern Peru. 



